A sewing jig

Abstract

This utility model relates to the field of sewing devices, and more particularly to a sewing fixture. It includes a separate pressure plate and a base plate; the surface of the base plate near the pressure plate is configured as a mounting surface for holding fabric, and multiple positioning pins are fixed on this mounting surface. The pressure plate has positioning holes corresponding to any of the positioning pins; the pressure plate is connected to a driving mechanism that drives the pressure plate to engage with the base plate, thus allowing the positioning pins to pass through the positioning holes. Simultaneously, the pressure plate presses the fabric firmly onto the base plate, exposing the part of the fabric to be sewn. Through the multiple positioning pins arranged in a contoured manner on the mounting surface of the base plate, combined with the precise engagement of the positioning holes on the pressure plate, multi-point puncture and fixation of the fabric is achieved, effectively suppressing the shrinkage and deformation of the fabric's elastic material and ensuring sewing position accuracy.

Description

Technical Field

[0001] This utility model relates to the field of sewing devices, and more particularly to a sewing fixture. Background Technology

[0002] In traditional underwear sewing processes, elastic fabrics are prone to shrinkage and deformation during sewing due to their material properties, leading to problems such as thread misalignment and uneven seams. Existing technologies mostly use fixed clamps or manual stretching for positioning, but these suffer from drawbacks such as low positioning accuracy, cumbersome operation, and inability to adapt to the dynamic deformation of elastic materials. Especially for complex sewing paths (such as curved edges), traditional fixtures struggle to maintain stable fabric positioning simultaneously, limiting the efficiency of automated sewing. Utility Model Content

[0003] The purpose of this invention is to provide a sewing fixture that solves the problem that traditional fixtures in the prior art cannot simultaneously maintain the stable positioning of the fabric.

[0004] The technical solution of this utility model is: a sewing jig, comprising a pressure plate and a base plate that are separately configured;

[0005] The surface of the base plate near the pressure plate is set as a mounting surface for mounting fabric. Positioning pins are fixed on the mounting surface. Multiple positioning pins are provided. The pressure plate has a positioning hole corresponding to any positioning pin.

[0006] The pressure plate is connected to a driving mechanism, which can drive the pressure plate to engage with the base plate. Therefore, the positioning pin passes through the positioning hole, and the pressure plate simultaneously presses the fabric onto the base plate, exposing the sewn part of the fabric.

[0007] Preferably, the base plate is made of ferromagnetic material, and a magnetic suction component is installed at the end of the pressure plate away from the base plate; when the positioning pin passes through the positioning hole, the base plate can be attracted by the magnetic suction component, so that the pressure plate and the base plate are magnetically connected.

[0008] Preferably, the pressure plate has a through mounting hole, the magnetic components are arranged in pairs and embedded in the mounting hole, and the lower surface of the magnetic components is flush with the lower surface of the pressure plate.

[0009] Preferably, a connecting component is installed at the end of the pressure plate away from the base plate, the connecting component being used to vertically connect the pressure plate to the actuating end of the drive mechanism.

[0010] Preferably, the connecting assembly includes a pull rod connected to the drive mechanism in a vertical direction, an adapter block connected to the end of the pull rod away from the drive mechanism, and crossbars fixed at both ends of the adapter block perpendicular to the pull rod. The end of the crossbar away from the adapter block is connected to the magnetic attraction assembly.

[0011] Preferably, the drive mechanism includes a lifting drive and a rotary drive. The actuator of the rotary drive is fixed to the pull rod and is used to drive the pressure plate to rotate. The actuator of the lifting drive is connected to the rotary drive and drives the rotary drive and the pull rod to rise and fall.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] (1) By using multiple positioning pins arranged in a contoured manner on the base plate, combined with the precise cooperation of the positioning holes opened on the pressure plate, the fabric can be fixed by multiple punctures at multiple points, effectively suppressing the shrinkage and deformation of the elastic material of the fabric, and ensuring the accuracy of the sewing position.

[0014] (2) The magnetic attraction component on the pressure plate can generate magnetic attraction force on the base plate made of stainless steel. This setting method avoids frictional wear between the positioning needle and the hole wall, and allows the drive mechanism to drive the base plate and the fabric to move synchronously through the pressure plate, adapting to the processing needs of the sewing machine for complex tracks.

[0015] (3) The combination design of the lifting drive and the rotating drive realizes the vertical lifting of the pressure plate to facilitate the picking and putting of fabric, and the function of matching the sewing path by horizontal rotation. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a structural diagram of a sewing fixture according to the present invention;

[0018] Figure 2 This is a partial enlarged view of the base plate described in this utility model;

[0019] Figure 3 This is a partial enlarged view of the pressure plate described in this utility model;

[0020] The components are: 1. Pressure plate, 2. Base plate, 3. Positioning pin, 4. Positioning hole, 5. Drive mechanism, 51. Lifting driver, 52. Rotation driver, 6. Magnetic suction assembly, 7. Connecting assembly, 71. Pull rod, 72. Adapter block, 73. Crossbar. Detailed Implementation

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] The present invention will be further described in detail below with reference to specific embodiments:

[0024] A sewing fixture, in this embodiment, is used in the sewing process of underwear to position elastic fabric and prevent the fabric from shrinking and deforming, thereby enabling the sewing machine to perform sewing operations accurately.

[0025] like Figure 1 and Figure 2 As shown, it includes a pressure plate 1 and a base plate 2 that are set separately. The base plate 2 is placed on a fixed base, and the surface of the base plate 2 near the pressure plate 1 is set as a mounting surface for mounting the fabric. Positioning needles 3 are fixed on the mounting surface. The positioning needles 3 are set in multiple ways to correspond to the fabric shape. When the fabric is placed on the mounting surface, the positioning needles 3 can pierce the fabric, thereby positioning multiple points on the fabric.

[0026] The pressure plate 1 is connected to a drive mechanism 5, which can drive the pressure plate 1 to engage with the base plate 2. Figure 3 As shown, the pressure plate 1 has positioning holes 4 corresponding to all the positioning needles 3. During the fastening process, the positioning needles 3 can pass through the positioning holes 4, so that the lower surface of the pressure plate 1 cooperates with the upper surface of the base plate 2 to press the fabric tightly. In addition, the outer dimensions of the pressure plate 1 are smaller than the outer dimensions of the fabric, so that the part of the fabric to be sewn is exposed on the outside of the pressure plate 1, thereby enabling the sewing machine to sew the fabric.

[0027] In a preferred embodiment of this application, the base plate 2 is made of stainless steel, and a magnetic suction assembly 6 is installed at the end of the pressure plate 1 away from the base plate 2. When the pressure plate 1 is driven by the drive mechanism 5, causing the positioning pin 3 on the base plate 2 to pass through the positioning hole 4, the magnetic suction assembly 6 generates a magnetic force on the base plate 2, causing the pressure plate 1 to be magnetically connected to the base plate 2. This arrangement ensures that, provided the inner wall of the positioning hole 4 does not abut against the positioning pin 3 and the drive mechanism 5 does not apply a clamping force to the pressure plate 1, the pressure plate 1 connected to the drive mechanism 5 can drive the base plate 2 to move.

[0028] Furthermore, the pressure plate 1 has a through mounting hole, and the magnetic attraction component 6 includes a pair of magnetic blocks. Any magnetic block is embedded in the mounting hole, and the lower surface of the magnetic block is flush with the lower surface of the pressure plate 1. This arrangement brings the magnetic block closer to the pressure plate 1, thereby achieving a greater magnetic attraction force.

[0029] A connecting assembly 7 is installed at the end of the pressure plate 1 away from the base plate 2. The connecting assembly 7 is used to vertically connect the pressure plate 1 to the actuating end of the drive mechanism 5. Specifically, the connecting assembly 7 includes a pull rod 71 connected to the drive mechanism 5 in a vertical direction. The end of the pull rod 71 away from the drive mechanism 5 is connected to an adapter block 72. The adapter block 72 has three interfaces, of which the top interface is connected to the pull rod 71, and the axes of the other two interfaces are horizontal, and each is equipped with a crossbar 73 perpendicular to the pull rod 71. The end of the crossbar 73 away from the adapter block 72 is connected to the magnetic suction assembly 6.

[0030] Furthermore, the drive mechanism 5 includes a lifting drive 51 and a rotating drive 52. The pull rod 71 is fixed to the actuating end of the rotating drive 52, enabling the rotating drive 52 to drive the pull rod 71 to rotate, thereby allowing the sewing machine to sew the curved edge of the fabric. The actuating end of the lifting drive 51 is connected to the rotating drive 52, enabling the rotating drive 52 to move up and down in connection with the pressure plate 1, thereby facilitating the loading and unloading of fabric between the pressure plate 1 and the base plate 2.

[0031] During work:

[0032] The lifting driver 51 drives the pressure plate 1 to rise, and the operator or automatic equipment places the fabric onto the base plate 2. The lifting driver 51 then drives the pressure plate 1 to fall, causing the positioning needle 3 to pass through the fabric and the positioning hole 4, thus fixing the fabric in place. Because the outer dimensions of the pressure plate 1 are smaller than the fabric, the parts of the fabric to be sewn can be exposed, making it easier for an external sewing machine to sew them.

[0033] At this point, the magnetic block generates magnetic force, causing the pressure plate 1 and the base plate 2 to magnetically attract each other. The drive mechanism 5 drives the pressure plate 1 to move, which in turn drives the base plate 2 and the fabric to move synchronously.

[0034] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A sewing jig, characterized in that, It includes a pressure plate (1) and a base plate (2) that are set separately; The surface of the base plate (2) near the pressure plate (1) is set as a mounting surface for mounting fabric. Positioning pins (3) are fixed on the mounting surface. Multiple positioning pins (3) are provided. The pressure plate (1) has a positioning hole (4) corresponding to any positioning pin (3). The pressure plate (1) is connected to a driving mechanism (5), which can drive the pressure plate (1) to engage with the base plate (2). Therefore, the positioning pin (3) passes through the positioning hole (4), and the pressure plate (1) simultaneously presses the fabric onto the base plate (2) and exposes the sewn part of the fabric.

2. The sewing fixture according to claim 1, characterized in that, The base plate (2) is made of ferromagnetic material, and a magnetic suction component (6) is installed at the end of the pressure plate (1) away from the base plate (2); when the positioning pin (3) passes through the positioning hole (4), the base plate (2) can be attracted by the magnetic suction component (6), so that the pressure plate (1) and the base plate (2) are magnetically connected.

3. A sewing fixture according to claim 2, characterized in that, The pressure plate (1) has a through mounting hole, and the magnetic components (6) are arranged in pairs and embedded in the mounting hole, with the lower surface of the magnetic components (6) flush with the lower surface of the pressure plate (1).

4. A sewing fixture according to claim 2, characterized in that, A connecting component (7) is installed at the end of the pressure plate (1) away from the base plate (2). The connecting component (7) is used to vertically connect the pressure plate (1) to the execution end of the drive mechanism (5).

5. A sewing fixture according to claim 4, characterized in that, The connecting assembly (7) includes a pull rod (71) connected to the drive mechanism (5) in a vertical direction. One end of the pull rod (71) away from the drive mechanism (5) is connected to an adapter block (72). Both ends of the adapter block (72) are fixed with crossbars (73) perpendicular to the pull rod (71). One end of the crossbar (73) away from the adapter block (72) is connected to the magnetic suction assembly (6).

6. A sewing fixture according to claim 5, characterized in that, The drive mechanism (5) includes a lifting drive (51) and a rotary drive (52). The actuating end of the rotary drive (52) is fixed to the pull rod (71) and is used to drive the pressure plate (1) to rotate. The actuating end of the lifting drive (51) is connected to the rotary drive (52) and drives the rotary drive (52) and the pull rod (71) to rise and fall.

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